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The epiglottis is a cover that is situated on the posterior of the tongue. When swallowing solids or liquids, the tongue shifts the food towards the posterior oral wall with a motion called peristalsis. This movement automatically pushes the epiglottis over the glottis, preventing whatever is being swallowed from entering the lower airway.Once the food is in the oesophagus the muscle relaxes, the tongue moves anterior, releasing the seal between the epiglottis and the glottis to allow air to move into the lung structure.

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16y ago

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